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Subtract 28/10 from 12/8

1st number: 1 4/8, 2nd number: 2 8/10

12/8 - 28/10 is -13/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 10 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 8 × 5 = 40,
    12/8 = 12 × 5/8 × 5 = 60/40
  3. Likewise, for the 2nd fraction, since 10 × 4 = 40,
    28/10 = 28 × 4/10 × 4 = 112/40
  4. Subtract the two like fractions:
    60/40 - 112/40 = 60 - 112/40 = -52/40
  5. After reducing the fraction, the answer is -13/10

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